Plaster base



Patented Dec. 18, 1934 PATENT l walter F. senulz, Youngstown,01110;-assignbr-tof y h lL fl'rnscon Steel Company-Youngstownyohio,"acorporation of Michigan y Animation August "it, 19,33, y ',s'erjia1No.,` stava/fittiY z claims. ,lotsa-11th The .present invcntionrelates,to plaster bases'A of sheet metal, andthe-object lis to provideastructure which imay be made of light gauge material, is extremelycheap to manufacture, can be applie'dtothe 'supports with ease andexpedition, and when in place constitutes a carrier or base for theplaster which will most effectively support the same, and will eliminatediscoloration due to breathing and dusting that is common with woodlaths. in a great saving of plaster due to the character of thestructure and its mounting on the studding or other supports, and inaddition effecting a tremendous saving in dead weight load whereveremployed, but especially in tall buildings.

In the accompanying drawing:

Figure 1 is a face view of a portion of a wall showing the plaster basein place.

Figure 2 is a vertical cross sectional view illustrating the completewall with the plaster in place. f

Figure 3 is a detail rear elevation to show outstanding fianges aroundthe slots.

Figure 4 is a detail view showing the means for securing the lath tometal supports.

In the embodiment disclosed spaced studs 3 are provided which may be ofthe usual form and either of wood or metal, the plaster base beingapplicable to either. The base is in the form of a relatively lightsheet of metal 4 which is provided with a plurality of intermediatelongitudinal ribs 5, these ribs being of V-shape in cross section. Onemargin of the sheet is provided with a rearwardly turned flange 6, thecpposite margin also has a rearwardly turned flange 7 having anoutstanding edge portion 8, providing a groove 9 along said edge. Theportions of the sheet between the ribs 5 and between said ribs andflanges 6 and 7 are provided with sets of longitudinally disposed slots10, the deformation of the material in the production of such slotsbeing rearwardly disposed, providing flanges 1l around the edges of saidslots. These flanges, as will be clear by reference to Figure 2 are ofless depth than the depth of the ribs 5 and anges 6 and 7 and liebetween the same. The slots are arranged in rows, the slots of each rowbeing located end-to-end, and staggered with relation to the adjacentrows. More than that, as clearly shown in Figure 1, the slots onopposite sides of a rib are located side by side, thereby providingconvenient means for passing fastening wires, as 12, through the samewhen the sheets are secured by said means. It will be understood thatany suitable means however may be employed Furthermore it results n .rIt will also be noted that the V-shaped formation and that wires orlike-fasteners are particularly useful Wherfh-e Stud 01? .SUDPQS'N Qfmetal.- In ,the application this structure tothe supports E3. the sheetsare arrngedfhlzomlly, With the edsesf "the ,ribs against fthsasuppflrts;as shown in Figure 2. As a consequence it will be evident that the mainbody of the plaster base is spaced `from the supports or studs and thatas a consequence the slots 10 have their rear sides entirely open andnot obstructed by the studs.

of the ribs provides `in the outer `side of the sheet correspondinglyformed channels 13 and that these channelsare relatively narrow. Theribs extending transversely of the studs constitute effectivereenforcements or stiffening agents for the intermediate portions of thesheet, while the marginal flanges 6 and 7 act as stiffening means forthe edges of the sheet. It will also be noted by reference to Figure 2that the flange 6L of one sheet will engage in the marginal groove 9 ofan adjacent sheet, so that the parts are interlocked.

When the complete plaster base for a wall is thus assembled and secured,it provides a smooth outer surface without obstruction to the sweep ofthe plastering tools and consequently a thin sheet of plaster can beeasily applied. When sov applied by reason of the V-formation of thechannels whch flare outwardly toward the exposed surface, these channelswill readily receive the plaster and be substantially lled with thesame. As they are narrow, however, they do not require a large amount ofplaster to fill them. The plaster will pass through the narrow slots l0and form keys over and around the flanges 11 made by the deformation ofthe metal in producing said slots.

The consequence is that a wall structure is provided in which theplaster is smooth and even and is not materially subject to cracking ordislodgment. At the same time the plaster coat is thin but it iseffectively keyed to the base and is further held, especially whilegreen, against slipping by the ribs formed thereon by the plasterentering the channels 13. The plaster base moreover is spaced from thesupports or studding except for narrow lines of contact due also to theform of the ribs 5. It will be obvious that the base can be readily andcheaply manufactured and easily applied, and that the completedstructure will be light in weight, thus materially decreasing the deadlload that must be carried by the other structural parts of the building.

From the foregoing, it is thought that the construction, operation andmany advantages of the herein described invention will be apparent tothose skilled in the art without further description, and it Will beunderstood that various changes in the size, shape, proportion and minordetails of construction may be resorted to without departing from thespirit or sacrificing any of the advantages of the invention.

1. A vwall structure including spaced lsupports and a plaster base onsaid supports, said base including an elongated metal sheet extendingacross a plurality of the supports and having spaced ribs formedtherein, said ribs being of substantially V-form in cross section anddisposed across the supports with their closed edges bearing against thesame, the portions of the sheets between the ribs being thereby spacedfrom the supports and having substantially smooth outer faces inter-vrupted by substantially V-shaped channels'formed by the'ribs and saidportions being each provided with rearwardly punched slots that aredisposed longitudinally of the ribsand channels, and transversely of thesupports, said slots being arranged in rows vend to end parallel withthe channels, a plurality of 'said rows being located between adtenedand the portions of the sheet between the, ribs being fiat and normallylying in substantially a common plane and being spaced by the ribs fromsaid supports, said ribs forming spaced subl stantially parallelopenV-shaped channels in the outer plaster-receiving face of the sheet,and said portions of the sheet between the channels having aplurality ofrows of substantiallyparallel elongated plaster key-receiving slotspunched rearwardly through the sheet between adjacent ribs, the slotsbeing substantially parallel to the channels and the deformed material'around theslots forming rearwardly extending flanges between andparallel to the ribs andr materiallyof less depth than the same.

WLTER sc-HLZ.-

